Question 1

The delta wound stator:&#10;A)Shares a common connection point .&#10;B)Has each winding connected in series .&#10;C)Does not require rectification.&#10;D) None of these choices.

Accepted Answer

A delta wound stator does not share a common connection point (that's a star or wye connection), does not have each winding connected in series (they are connected in a closed loop), and rectification depends on the application, not the winding type.

Question 2

What type of voltage is the output at the &#34;Bat&#34; terminal of the AC generator?&#10;A)DC.&#10;B)AC.&#10;C) Three-phase unrectified .&#10;D) None of these choices.

Accepted Answer

The output at the "Bat" terminal of the AC generator is typically DC voltage, as it goes through a rectifier to convert the AC voltage from the generator into DC voltage for charging the battery.

Question 3

In a full hybrid HEV, which component is responsible for recharging the 12-volt battery from the 300-volt direct current system?&#10;A)The battery control module .&#10;B)The belt driven generator .&#10;C)The DC/DC converter.&#10;D) The LV control module .

Accepted Answer

The DC/DC converter is responsible for converting the high voltage DC power from the battery to the lower voltage DC power needed to recharge the 12-volt battery. The belt driven generator may assist in recharging the 12-volt battery, but its primary function is to generate electricity for the high voltage system. The battery control module and LV control module are not directly responsible for recharging the 12-volt battery.

Question 4

How many output diodes does an AC generator stator with three windings usually have?&#10;A) Three .&#10;B) Four .&#10;C) Five .&#10;D) Six .

Accepted Answer

The answer of How many output diodes does an AC...

Question 5

What components make up the AC generator field circuit?&#10;A)Battery, stator, and diodes .&#10;B)Battery, regulator, and stator .&#10;C)Battery, rotor, and regulator .&#10;D) Regulator, stator, and rotor .

Accepted Answer

The AC generator field circuit typically includes the battery, rotor, and regulator. The battery provides the initial electrical source, the rotor generates a magnetic field when electricity flows through it, and the regulator controls the voltage output.

Question 6

The magnetic field current of the AC generator is carried in the:&#10;A)Rotor.&#10;B)Diode trio.&#10;C)Rectifier bridge.&#10;D)Stator.

Accepted Answer

The magnetic field current of an AC generator is carried in the rotor. The rotor is responsible for creating a magnetic field that interacts with the stator windings to produce an AC voltage output. This is why AC generators are also known as alternators. The diode trio and rectifier bridge are components used for converting the AC voltage output to DC voltage output for use in a DC electrical system.

Question 7

A 100amp AC generator produces 105 amperes all the time. Full fielding it produces 105 amperes also. What does this indicate?&#10;A)The regulator is running the AC generator full field all the time .&#10;B)The AC generator is faulty .&#10;C)The output wire has excessive resistance .&#10;D) The drive belt is slipping .

Accepted Answer

The fact that the generator produces 105 amperes all the time, even when full fielded, indicates that the regulator is running the AC generator at full field constantly to maintain the output, suggesting that the generator is not regulating properly.

Question 8

What device(s) is (are) used to rectify current in an AC generator?&#10;A) Brushes .&#10;B) Diodes .&#10;C) Stator .&#10;D) Rotor .

Accepted Answer

Diodes are used to rectify current in an AC generator. They allow current to flow in only one direction, converting the alternating current into direct current. Brushes, stator, and rotor are components of the generator but are not used for rectification.

Question 9

The voltage induced in one conductor by one revolution of the rotor is called:&#10;A)Three-phase.&#10;B)Half-wave.&#10;C)Single-phase.&#10;D) Full-wave.

Accepted Answer

The voltage induced in one conductor by one revolution of the rotor is known as single-phase AC voltage. This voltage is produced when the rotor's magnetic field passes over the stator winding. It is a basic and most commonly used method of producing AC voltage.

Question 10

What does increasing the regulator field resistance indicate?&#10;A) More output current is desired .&#10;B) The rotor is turning too slowly .&#10;C) Less output current is desired .&#10;D) B+ sensing voltage is lower than specified .

Accepted Answer

Increasing the regulator field resistance will decrease the output current, so less output current is desired.

Question 11

The amount of voltage output of the AC generator is related to:&#10;A)Field strength.&#10;B)Stator speed.&#10;C)Number of rotor segments.&#10;D) All of these choices.

Accepted Answer

The answer of The amount of voltage output of the...

Question 12

Where is the output of an AC generator created?&#10;A) The stator .&#10;B) The rotor .&#10;C) The housing .&#10;D) The brushes.

Accepted Answer

The answer of Where is the output of an AC...

Question 13

In a full hybrid HEV, which component is responsible for recharging the 12 volt battery from the 300 volt direct current system?&#10;A) The battery control module.&#10;B) The belt driven generator .&#10;C) The DC/DC converter .&#10;D) The LV control module .

Accepted Answer

The answer of In a full hybrid HEV, which component...

Question 14

Why should an AC generator never be operated open-circuit?&#10;A)It could overcharge the battery .&#10;B)It could burn out electronic components .&#10;C) It could ruin the AC generator stator .&#10;D) None of these choices.

Accepted Answer

The answer of Why should an AC generator never be...

Deck 7: Charging Systems Charging System Testing and Service